C:\ARQUIVO DE TRABALHO 2011\EDI - Unama

56
ABSTRACT
EVALUATION OF HYDRAULIC AND ORGANIC LOAD FROM
THE AIRPORT OF ETE LARGE
This work aims the evaluation of the hydraulic and organic treatment of sewage (TEE) in
the International Airport of Belém (IBA), which had its experimental design in two steps:
first and second. The first step, it comprised to characterize the raw drainage of ETE in
therms of flow, pH, COD, TSS, N-amonical, P and E-coli, during the dry and rainy periods
in the Amazonian Region (2007 to 2008) with the objective of obtain information about
the hydraulic load percapta (L / inhabitants.day) and load percapta of pollutants (g /
inhabitants.day). And in the second phase, evaluation was conducted in two separate
treatment systems (activated sludges and UASB-activated sludges), so to estimate the
informations about the production of sludge (L / inhabitants.day), energy consumption
(kw), demand for area (m 2 / inhabitants), efficiency of COD (E COD
) and effluent COD (COD efl
)
In the first stage, the average results were: dry period ¾18,87±9,39 L / inhabitants.day;
8.38 ± 5.95 gCOD / inhabitants.day; 2.92 ± 2.03 gSST / inhabitants.day; 1.85 ± 0.98 gNamoniacal
/ inhabitants.day, and 0,12±0,06 gP / inhabitants.day, and rainy season
23,67±7,41L / inhabitants.day; 10 ± 4.97 gCOD / inhabitants.day; 3.66 ± 1.70 gSST /
inhabitants.day; 1.72 ± 1 gN-amoniacal/ inhabitants.day, and 0.14 ± 0.06 gp /
inhabitants.day. These results, by applying the hypothesis test of Kruskal-Wallis, showed
no statistical differences between the rainy season and dry season (p>a=5%) in hydraulic
and organic terms, allowing the inference that the wastewater generated TEE in the IBA
has characteristics independent of the flow of passengers + employees. In the second
stage of this work, it obtained for the activated sludge’s system: Pequivalente: 1236
inhabitants, sludge’s production of 1.97 L / inhabitants.day, consumption of energy for
aeration of 0,744 kw, demand for 0,038 area of m 2 / inhabitants and E COD
= 80% and COD efl
.= 90 mg / L. and for UASB-activated sludges obtained P EQV
: 1236 inhabitants, production
of sludge of 1.97 L / inhabitants.day, consumption of energy for aeration of 0744 kw, 0038
demand for area of m 2 / inhabitants and E COD
= 80% and COD efl
.= 90 mg / L. Evaluating the
question generated sludge’s production, energy and specific area demand, it is clear that
the adoption of the system UASB + LA is which represents the best alternative for the
treatment of sewage from TEE of AIB, as that treats the same amount of sewage and the
removal efficiency of COD equivalent to the system of LA smaller amount of sludge
generated and energy consumption.
Key words: Airport, treatment of sewage, hydraulic load , pollutants load
1 INTRODUÇÃO
Especificamente na área de saneamento o registro da vazão assume papel de
destaque para a solução de problemas relacionados ao abastecimento de água, drenagem
urbana, análise da capacidade de recebimento de esgotos em corpos d’água, siste-
Traços, Belém, v. 12, n. 25, p. 55-69, jun. 2010